Hammer follow to half cock when firing

Discussion in '1911 Forum' started by danf_fl, Jan 5, 2011.

  1. danf_fl

    danf_fl Retired Supporter

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    Subject: My CZ-Dan Wesson, C-BOB, 10mm.
    Problem: Sometimes hammer would go to half cock when shooting.
    Replaced: Sear, Sear spring, Disconnector, Hammer.
    Verified: sear and hammer mated correctly, and sear spring was not too light on sear.

    Suspected: Weak recoil spring, allowing sear to "bounce" when shooting full power 10mm loads.

    Remedy: Replaced recoil spring.

    Never seen anything like it.
     
  2. robocop10mm

    robocop10mm Lifetime Supporting Member Lifetime Supporter

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    I had an STI .40 that developed this after many thousands of rounds. I gave it to Dave Dawson at Dawson Precision. He replaced the sear and set it up with a nice, crisp 3.75 lb trigger. Never had the problem again.